Donald Smith Devices too good to be true

[janost]

I got afraid of frying any more mosfets so I tried this.
This is the Tesla way of discharging the cap into a coil.
It works very well.

There is only a singel discharge cycle every 50mS so the cap does not charge to 146v in a single cycle.

But it still provided 60mA into a dead short.

A 1nF - 15nF cap maybe

[hotrod68r]

hey,i can do attachments.1 basic voltage doubler.2 my current setup.

[janost]

hey,i can do attachments.1 basic voltage doubler.2 my current setup.

Nice.

Why the LEDs?

Also, I cant run with a cap over the transistor because it increases the switching time.
That is not good with mosfets as it increases heatdisapation and heat is lossy.

[hotrod68r]

cap on t1 is 100n.i could be wrong but i think it gives a sharper switch off and offers some protection to t1 from transients.likewise the leds don't conduct until base emitter voltage gets to about 2.32 but conduct harder as v peaks higher.t1 can cop 5v max b-e so the leds give a visual indication,(under conditions when you are pushing your luck) and offer some protection as well.my frequency meter was happier with the cap on t1 too.

[janost]

cap on t1 is only 100n.i could be wrong but i think it gives a sharper switch off and offers some protection to t1 from transients.likewise the leds don't conduct until base emitter voltage gets to about 2.32 but conduct harder as v peaks higher.t1 can cop 5v max b-e so the leds give a visual indication and offer some protection as well.my frequency meter was happier with the cap on t1 too.

The reverse B-E of -5V will never happen.
Thats what the diode is for and the pulse is feed back to the battery.

You should not have more than -0.7v on the base so only one of the leds should light up?

My mosfet can take 500v drain-source and +-20v on the gate.
What killed it was high pulses on the gate.

[hotrod68r]

i have seen both leds light dimly with the c.t trafo and adjusting the 100k vr1.your right though,the reverse peak v is a fraction of the forward peak v.i usually have short term relationships with mosfets too :+)

[level]

Hi,
Pulsing HV Capacitor with different frequency
Don Smith Table Top Device Part 4 - YouTube
CORNELL DUBILIER - 940C30S1K-F
http://www.cde.com/catalogs/940C.pdf
can anyone explain this?

Hi ctbenergy. It appears that you have your 0.1uF capacitor and load (with its equivalent resistance R) connected in a RC differentiator circuit arrangement. At lower frequencies, an RC differentiator gives pulses across the resistor at the squarewave switching points, and the output waveform across the resistor starts to resemble the input squarewave more and more as you increase in frequency. The rate of discharge of the pulse depends on the time constant R x C.


For a little more info on this, scroll down to where it says "The RC Differentiator" on the following webpage:
RC high pass filter and RC Differentiator

[Jack Noskills]

Help needed

I think I have figured it out, I can take power from system without affecting source. Best result so far is 50 watts in and maybe 30-40 watts out. So I am not seeing OU, I think it is because of toroid shape I used. If you can build stuff then please take a look at

Is this the Smith/Kapanadze secret ?

and if it makes any sense then try to replicate.

I am using two primary coils, one secondary coil and two capacitors. No diodes, no sparks, input must be sinewave. If this works as it should then power should be a function of input voltage and frequency. More details in the thread.

[janost]

I got afraid of frying any more mosfets so I tried this.
There is only a singel discharge cycle every 50mS so the cap does not charge to 146v in a single cycle.

But it still provided 60mA into a dead short.

A 1nF - 15nF cap maybe

The output from the 10:1 stepdown transformer looked like this.
20V-pp and a repetitionsrate of 50mS (20Hz)

I figured that I first change to a smaller cap and then fullwave rectify the output.

[mr.clean]

Hi Mr. Clean,

Your unrelenting quest has me even more inspired.More power to you buddy! While I have not posted much yet,I see that the direction of own research and yours are now very close.


Saw your youtube video.Found it very interesting.Now you seem hot on the trail.I too studied the commercial device.I noted all the components and what Don said about.

Some observations were from Don's videos were:

(1.) In almost all the videos this device was shown.When he had the Tesla conference it was the first device shown.

(2.) Notice the transformer was run by an inverter.By my observations,it maybe pulsing 110v etc @50-60hz into the big transformers.Now here is part that is open for serious comment.The big transformer was now been pulsed in my opinion at 50-60hz! Here is a similar version at:

High Voltage Transformers

Scroll down and see the 60Hz brothers of that beast of a transformer.

Next is the 200amp diodes.Spice simulation shows massive amps in caps but when I added the diodes from the library, I lose significant amount of amps.My Lt Spice does not have 200 amp fast switching diodes in its library.


Out of the diodes is what looks like LITZ wire:Litz wire - Wikipedia, the free encyclopedia really thick wire...hmmmm???


Then of course the bleeder resistors etc.

Now I do not know the capacitance of the two big capacitors but,I calculated them out to be of high capacitance indeed.(Based on Don's statement about 35kVa or there about figures.Not pass a Farad yet though.

These caps appear to be fed by 60hz or so DC pulses.No problem, the capacitor charge formula does give sufficient power in them.

Now to my point: The entire device is a Two Diode Rectifier with Oversize smoothing caps! Giant high capacity Reservoir Capacitors.Not only that,I believe, the grounds are NOT separate.That is, the centre tap IS what you use when you attach an inverter or switching device.Notice both the lead from the Capacitors and the nst are close.

(Yes Mr. Clean, you know this eh? Hee, hee ask me how I know you know this.)

Google Image Result for http://baec.tripod.com/MARCH92/pics/smoothing_capacitor.bmp

What we have are two diodes and centre tapped transformer as the earth ground! We recall Don spent a lot of time at the Tesla Conference talking about properties of coils.

Then I kept thinking earth ground.Actually mother earth ground.Now we know ground is relative.The latter devices merely used earth ground as "earthing" a way of blowing off excess energy and to prevent the devices from heating up.

So I have hypothesised that all that is needed next is an inverter!

I came to these conclusions when I tried with limited success to earth my device to the actual earth.Then when, I tried earthing the cap through a microwave diode to the flybacks ground,sparks started flying!

So Mr. Clean and others, you are hot in pursuit...

Ged

hehe im glad to be of service, i certainly hope im going forwards and not back

And hey, since it's still resonant induction i think the Gegene is relevant,
i just tried it with a "NuWave" brand name induction cooker at my work and one of the Bifilar pancake coils i made with split 12 gauge speaker wire and have 1000 watts of halogens running with 185VAC across them for 3 hours now uninterrupted

it seems the lowest it will run uninterrupted is 270F (which i dont know the input wattage yet) but will bring my wattmeter to work tomorrow to check

i think the reason they turn off for people sometimes is just like at home the cooker is designed to maintain the same temp, so turns off when too much power is running with no load to absorb it

And one noticably cool thing is, with cooker turned up 200F further than 270F, the lights dont go brighter... so i think they are drawing maximum at the present setting based on their resistance and cooker pancake volts must be constant.

So now i should add more load and see how much wattage can be driven before the load goes below its operating voltage
anyway this is cool, and im gonna work on this as well

And actually, i think i would've have ended up with this setup in time anyway, as i was planning to make a high freq solid state igbt driver etc...
But would've first tried a 2 turn primary Eric/Tesla style, but certainly stepping down as everyone is doing makes sense too
I think i will try a 2 turn secondary to feed back to caps and grid-tie inverter, we'll see, but i think adding another coil to feedback woiuld draw from the cooker pancake and would kill power, so the bifilar must be harvested rather than the cooker to have positive feedback?

thanks again Ged, and keep going

[ctbenergy]

Hi,

This fulfils what Don siad about the formula

E=0.5xCxV squared x frequency.

In other words, high frequency means greater power stored in the capacitor.

Ged

Thank you ged and level for the comments

Last night I viewed dons videos.
Seen thousands of times, always something new

Donald L Smith Inventors Weekend 2001
ДС_2001 - YouTube

this has all off the diffrent component on it
witch somtimes, say this part over her, and this part, and this part we have different blocks...

Table Top Device
http://i48.servimg.com/u/f48/17/28/55/62/don110.jpg

Commercial Version
http://i48.servimg.com/u/f48/17/28/55/62/device19.jpg

Capacitor Datasheet
http://www.electricalpartmanuals.com....39-211-5C.pdf

Why he uses this large capacitor?
Is it Harmonic Resonance?

Harmonics (electrical power)
http://en.wikipedia.org/wiki/Harmoni...ectrical_power)

Effects of Harmonics on Power Systems
Effects of Harmonics on Power Systems | Power Quality content from Electrical Construction & Maintenance (EC&M) Magazine

[level]

Why he uses this large capacitor?
Is it Harmonic Resonance?

The real reason of why Don was rectifying the high voltage output to DC and using large high voltage capacitors to store the energy, or filter the pulsating DC, seems to be the mystery. It would certainly seem to be a lot easier to step the high voltage AC from the secondaries down to a lower voltage first using a step down transformer, before converting the output to DC. At high voltage, capacitors in the uF range can store a lot of energy, but you need to be continuously supplying those capacitors with a lot of energy to be able to keep the capacitors charged if you are drawing a lot of power off them into a load. So, maybe if a person can figure out why Don Smith was converting the high voltage output to DC and storing/filtering with high voltage capacitors rather than stepping the AC voltage down first, then you may have figured out an important factor in understanding how these devices are supposed to produce over unity. After looking at the table top (center tapped output coil) device closely, many people will probably be inclined to assume that either Don Smith had no idea what he was doing and his devices didn't really work, or Don deliberately scrambled up his demo circuit board a bit and also left out some key pieces of information so as not to give his secrets away.

If you are inclined to think that Don's circuits really did work, then maybe a person has to do it exactly as Don did and rectify the secondary coil's output to high voltage DC and store/filter in large (uF range) high voltage capacitors at the output. Capacitors in the uF range charged to a high voltage can be deadly if the high voltage terminals/wires are accidentally touched, so anyone thinking of building this type of circuit had better be aware of the dangers and know how to work safely around deadly high voltages. I am not personally recommending that anyone build this type of circuit due to the dangerous high voltages (I find it somewhat strange that in Don's presentations that I have seen he doesn't seem to have mentioned anything about how dangerous this type of high voltage circuit is). If you build the circuit that way, then you would need to use high speed, high voltage diodes with a fairly high current rating as well to do the rectification of the output from the secondary coils. You are then presented with the problem of how to convert the high voltage DC to a useable form. There are no doubt high voltage, high power, inverter circuits that could be used to do this, but it seems like a lot of trouble to go through, unless part of Don's 'secret' of over unity requires that the output be processed this way. However, Don stated in the Don Smith 'Bonus Videos' that you could use other methods to convert the high voltage AC output to a lower useable output voltage, so then why did Don do it the hard way on the dual output coil table top demo board?

It is easy to understand why some people have come to the conclusion that Don Smith was possibly somewhat delusional, as there are various things like this with his stuff that do not seem to make a whole lot of sense. I tried a setup similar to the simplified device that Don described in the Don Smith bonus videos, and it just doesn't seem the circuit will be able to work at all like Don said it should in the bonus videos. That should be enough to give anyone pause to think about what was really going on there. If the simplified device that Don Smith described in the bonus videos doesn't seem to work at all like Don Smith described in the video, is it really worth the effort to spend time on the more complicated devices? Just my perspective.

[ctbenergy]

i just tried it with a "NuWave" brand name induction cooker at my work and one of the Bifilar pancake coils i made with split 12 gauge speaker wire and have 1000 watts of halogens running with 185VAC across them for 3 hours now uninterrupted

it seems the lowest it will run uninterrupted is 270F (which i dont know the input wattage yet) but will bring my wattmeter to work tomorrow to check

i think the reason they turn off for people sometimes is just like at home the cooker is designed to maintain the same temp, so turns off when too much power is running with no load to absorb it

Hi,

On the web there are some good application notes.

http://www.st.com/internet/com/TECHN...CD00115561.pdf
3.4 Feedbacks

3.3 Power stage
L6384 IGBT driver and power stage schematic

[level]

i think the reason they turn off for people sometimes is just like at home the cooker is designed to maintain the same temp, so turns off when too much power is running with no load to absorb it

I think the main reason that induction cookers have a built in shut off when there is not enough load is I believe because the internal driver circuitry and internal driver coil is designed to run at resonance, and you can have high voltages across components and high currents circulating in the resonant output coil, and this can blow components or burn out the output coil if it is not designed to handle that kind of voltage and current continuously.

I think i will try a 2 turn secondary to feed back to caps and grid-tie inverter, we'll see, but i think adding another coil to feedback would draw from the cooker pancake and would kill power, so the bifilar must be harvested rather than the cooker to have positive feedback?

If the bifilar pancake coil secondary is between the induction cooker output coil and the small third windings, it might really be mainly drawing power from the external bifilar pancake coil, but it might still be a combination of both. That seems to be the way the other guy did it and it seems to have worked somewhat anyway for him. It seems worth a try.

[janost]

I think the main reason that induction cookers have
If the bifilar pancake coil secondary is between the induction cooker output coil and the small third windings

Can you hear how stupid that sentens sounds?

It contains so many weird words in one sentens that it makes you a nerd and the sentense non understandable?